From 52dc621b426fcb55ef3887e67de08a612b15480d Mon Sep 17 00:00:00 2001
From: arf20 <aruizfernandez05@gmail.com>
Date: Mon, 27 Oct 2025 16:54:00 +0100
Subject: implemented commiting events to disk

---
 events.log |  4 +++-
 main.c     | 14 ++++++++++----
 monitor.c  | 46 ++++++++++++++++++++++++++++++++++++++--------
 monitor.h  |  2 +-
 4 files changed, 52 insertions(+), 14 deletions(-)

diff --git a/events.log b/events.log
index 85c4116..d74a182 100644
--- a/events.log
+++ b/events.log
@@ -73,4 +73,6 @@ http,2025-08-26T14:39:43Z,down
 http,2025-08-26T14:44:45Z,up
 http,2025-10-24T10:49:20Z,down
 http,2025-10-24T12:38:19Z,up
-
+ipv4,2025-10-27T15:43:17+0000,up
+dns,2025-10-27T15:43:17+0000,up
+https,2025-10-27T15:43:17+0000,up
diff --git a/main.c b/main.c
index 197d1b2..d262ac0 100644
--- a/main.c
+++ b/main.c
@@ -16,9 +16,15 @@
 
 #include "monitor.h"
 
-#define PORT        8888
 #define RES_BUFF    65535
 
+
+#define PORT        8888
+
+#define CFG_FILE    "monitor.cfg"
+#define TMPL_FILE   "index.htm.tmpl"
+#define LOG_FILE    "events.log"
+
 static char *index_format_template = NULL;
 
 
@@ -71,7 +77,7 @@ enum MHD_Result answer_to_connection(
 
 int main() {
     /* read index template file */
-    FILE *tf = fopen("index.htm.tmpl", "r");
+    FILE *tf = fopen(TMPL_FILE, "r");
     if (!tf) {
         fprintf(stderr, "error opening index template file: %s\n",
             strerror(errno));
@@ -97,11 +103,11 @@ int main() {
         return 1;
     }
 
-    monitor_init("monitor.cfg", "events.log");
+    monitor_init(CFG_FILE, LOG_FILE);
 
     while (1) {
         monitor_check();
-        monitor_update_events();
+        monitor_update_events(LOG_FILE);
         sleep(5);
     }
 }
diff --git a/monitor.c b/monitor.c
index d47238d..c277752 100644
--- a/monitor.c
+++ b/monitor.c
@@ -291,7 +291,7 @@ monitor_init(const char *cfg_path, const char *log_path)
     return 0;
 }
 
-const char *
+static const char *
 target_uptime(const target_t *target)
 {
     static char buff[256];
@@ -315,7 +315,7 @@ target_uptime(const target_t *target)
     return buff;
 }
 
-float
+static float
 target_perc_uptime_since(const target_t *target, time_t since)
 {
     time_t downtime = 0;
@@ -340,7 +340,7 @@ target_perc_uptime_since(const target_t *target, time_t since)
     return 1.0f - ((float)downtime / (float)(time(NULL) - since));
 }
 
-float
+static float
 target_perc_uptime_total(const target_t *target)
 {
     time_t downtime = 0, since = 0;
@@ -358,13 +358,13 @@ target_perc_uptime_total(const target_t *target)
     return 1.0f - ((float)downtime / (float)(time(NULL) - since));
 }
 
-int
+static int
 color_map(float perc)
 {
     return 255.0f*exp2f(100.0f*perc-100.0f);
 }
 
-const char *
+static const char *
 generate_timeline(const target_t *target, time_t since, time_t span)
 {
     static char buff[BUFF_SIZE];
@@ -574,7 +574,7 @@ monitor_check()
     static size_t check_num = 0;
     time_t time_now = time(NULL);
     struct tm *tm_now = gmtime(&time_now);
-    strftime(timestr, 256, "%Y-%m-%d %H:%M:%S", tm_now);
+    strftime(timestr, 256, "%F %T", tm_now);
 
     static const int (*check_funcs[])(const char *) = {
         check_reach,
@@ -591,8 +591,36 @@ monitor_check()
     check_num++;
 }
 
+static void
+commit_event(const char *log_path, const target_t *target,
+    const event_t *event)
+{
+    static char *status_str[] = {
+        "down",
+        "up"
+    };
+
+    char buff[256];
+
+    FILE *logf = fopen(log_path, "a");
+    if (!logf) {
+        fprintf(stderr,
+            "Error opening log file for writing: %s\n", strerror(errno));
+        return;
+    }
+
+
+    struct tm *tm_event = gmtime(&event->time);
+    strftime(buff, 256, "%FT%T%z", tm_event);
+
+    fprintf(logf, "%s,%s,%s\n",
+        target->name, buff, status_str[event->status]);
+
+    fclose(logf);
+}
+
 void
-monitor_update_events()
+monitor_update_events(const char *log_path)
 {
     static char *status_str[] = {
         "down",
@@ -601,7 +629,7 @@ monitor_update_events()
 
     time_t time_now = time(NULL);
     struct tm *tm_now = gmtime(&time_now);
-    strftime(timestr, 256, "%Y-%m-%d %H:%M:%S", tm_now);
+    strftime(timestr, 256, "%F %T", tm_now);
 
     for (size_t i = 0; i < targets_n; i++) {
         if (targets[i].events_size > 0 && (
@@ -623,6 +651,8 @@ monitor_update_events()
 
         target_events_push_ordered(&targets[i], &event);
 
+        commit_event(log_path, &targets[i], &event);
+
         printf("[%s] [monitor] %s is now %s\n",
             timestr, targets[i].name, status_str[targets[i].status]);
 
diff --git a/monitor.h b/monitor.h
index 198908e..f9b1af3 100644
--- a/monitor.h
+++ b/monitor.h
@@ -5,6 +5,6 @@ int monitor_init(const char *cfg_file, const char *log_file);
 const char *monitor_generate_status_html();
 const char *monitor_generate_incidents_html();
 void monitor_check();
-void monitor_update_events();
+void monitor_update_events(const char *log_path);
 
 #endif /* _MONITOR_H */
-- 
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